EP2520536B1 - Lifting vehicle - Google Patents

Lifting vehicle Download PDF

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Publication number
EP2520536B1
EP2520536B1 EP12166815.6A EP12166815A EP2520536B1 EP 2520536 B1 EP2520536 B1 EP 2520536B1 EP 12166815 A EP12166815 A EP 12166815A EP 2520536 B1 EP2520536 B1 EP 2520536B1
Authority
EP
European Patent Office
Prior art keywords
boom
load
equipment
lowering
lifting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP12166815.6A
Other languages
German (de)
French (fr)
Other versions
EP2520536A1 (en
Inventor
Matteo Piovano
Mario Ferdinando Viola
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Merlo Project Srl
Original Assignee
Merlo Project Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F17/00—Safety devices, e.g. for limiting or indicating lifting force
    • B66F17/003—Safety devices, e.g. for limiting or indicating lifting force for fork-lift trucks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/065—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted
    • B66F9/0655—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks non-masted with a telescopic boom

Definitions

  • the present invention refers to a lifting vehicle, comprising:
  • Lifting vehicles of this type can be equipped with different types of equipment, such as forks, shovels, aerial platforms, etc.
  • equipment such as forks, shovels, aerial platforms, etc.
  • the load applied on the equipment located at the end of the telescopic boom may vary within very wide ranges.
  • One of the fundamental safety elements of a lifting vehicle is its stability to longitudinal overturning.
  • the vehicle is equipped with a load diagram that indicates the maximum load that can be applied at the end of the lifting boom depending on the position of the equipment.
  • EP-A-1312579 discloses a lifting vehicle according to the preamble of claim 1, wherein an electronic control system generates an electronic load diagram and displays on the electronic load diagram a cursor located at the working position of the boom. However, compliance with the load diagram is left to the operator.
  • the anti-overturning safety system of the known type is not a sufficient safety guarantee in dynamic conditions.
  • the anti-overturning system of vehicles of known type is essentially designed for safety against longitudinal overturning under static conditions. If the anti-overturning safety system blocks the boom during the lowering of the boom at high speed, the inertial force may cause overturning of the vehicle.
  • the present invention aims to provide a lifting vehicle with increased safety against longitudinal overturning under dynamic conditions.
  • this object is achieved by a vehicle having the characteristics forming the subject of the claims.
  • numeral 10 designates a lifting vehicle comprising a self-propelled chassis 12 having a front axle 14 and a rear axle 16.
  • the vehicle 10 comprises a telescopic boom 18 articulated in the rear section of the chassis 12 about a transverse axis 20.
  • the telescopic boom 18 is equipped at one end with an attachment 22 for the connection of different types of equipment.
  • the vehicle 10 comprises at least one cylinder for lifting/lowering 24 with ends articulated to the chassis 12 and the boom 18 about respective axes 26, 28.
  • the boom 18 is also equipped with a cylinder (not shown) which controls the telescopic extension and retraction movements of the boom.
  • the vehicle 10 has a hydraulic control circuit 30 which includes a main pump 32 driven by the thermal engine 34 of the vehicle.
  • the hydraulic circuit 30 comprises a hydraulic distributor 36 that receives fluid under pressure from the pump 32 and controls the hydraulic cylinder 24 by means of a hydraulic supply line 38.
  • the distributor 38 is connected to a reservoir 40 via a discharge line 42.
  • the hydraulic control circuit 30 comprises a block valve 44 controlled electrically, disposed on the supply line 38.
  • the block valve 44 When the block valve 44 is activated it blocks the movements of the boom 18 that worsen the risk of overturning (lowering and extension).
  • the hydraulic control circuit 30 further includes a relief valve 46 controlled electrically.
  • the relief valve 46 is adapted to limit the maximum speed of lowering of the boom 18.
  • the lowering speed of the boom 18 is controlled by the operator through the distributor 36.
  • the relief valve 46 limits the maximum flow rate of fluid on the command line 38 and consequently limits the maximum speed of lowering of the boom 18 as a function of the electric control signal which it receives.
  • the vehicle 10 includes a control system 48 which controls, among other things, the block valve 44 and the relief valve 46.
  • the control system 48 comprises an electronic control unit 50 programmed to control the relief valve 46 in function of the position of the boom 18, of the load applied to it and the type of equipment applied to it.
  • the control system 48 includes a load sensor 52 which provides an indication of the intensity of the applied load to the boom 18.
  • the load sensor 52 can be for example a load cell applied to the cylinder for lifting/lowering 24.
  • the control system 48 comprises sensors 54, 56 which detect, respectively, the angle ⁇ of inclination of the boom 18 and the length L of extension of the telescopic portion of the boom 18 (boom extension).
  • the control system 48 also comprises a recognition unit 58 adapted to recognize the type of equipment 60 applied to the boom 18.
  • the recognition unit 58 can for example be based on RFID technology.
  • the control system 48 further comprises one or more sensors 62 for detecting the load on the rear axle 16 of the vehicle.
  • a plurality of selectors 64, 66 can also be provided which can be manually set by the operator.
  • a selector 64 may be provided, for selection of the type of equipment 60 in the case wherein the recognition unit 58 does not automatically recognize the type of equipment 60 applied to the boom 18.
  • a selector 66 can also be provided which allows temporarily deactivating of the operation of block valve 44.
  • the electronic control unit 50 receives signals from the sensors 52, 54, 56, 62 from the recognition unit 58 and from the selectors 64, 66, plus any information from other sensors or from other selectors that may be present on the vehicle.
  • the electronic control unit 50 is programmed to control the relief valve 46 so as to limit the maximum speed of lowering of the boom 18 according to the type of equipment 60, the load on the boom 18, the length L and angle ⁇ of the boom 18.
  • the electronic control unit 50 limits the maximum speed of lowering of the boom with respect to the absolute maximum speed, in order to ensure that the vehicle operates in stable conditions regarding the risk of longitudinal overturning even under dynamic conditions.
  • the limitation on the maximum lowering speed of the boom 18 enables the vehicle to be kept under safe conditions during the lowering manoeuver of the boom 18, which is the most critical from the point of view of the risk of longitudinal overturning.
  • Figures 3 and 4 show by way of example two load diagrams of the vehicle 10 with a different load P applied to the boom 18.
  • the load diagram of Figure 3 shows the working range of the vehicle 10 with a load P1 of 1500 Kg and the diagram of Figure 4 shows the working range of the same vehicle with a load P2 of 3400 Kg.
  • the diagrams relating to a vehicle operating with the forks 68 are shown.
  • the load diagrams of the vehicle 10 vary depending on the type of equipment applied to the boom and as a function of the load applied to the boom.
  • a MAX indicates the maximum work area of the boom 18, which represents the geometric coverage area of the boom 18.
  • a EFF indicates the actual work area with the load P1 or P2. The actual work area is reduced compared with the maximum work area with the increase of the load P.
  • the maximum work area A MAX corresponds to the conditions in which the load P applied to the boom 18 is zero.
  • the actual work area A EFF is divided into work sub-areas with different maximum speeds, indicated with A EFF1 , A EFF2 , A EFF3 , A EFF4 and A EFF5 .
  • the electronic control unit 50 limits the maximum speed of lowering of the boom 18 in different ways according to the different work sub-areas.
  • the maximum speed of lowering of the boom 18 is 100%, this means that in this subarea there is no limitation of the maximum speed of lowering of the boom and the lowering speed is equal to the maximum possible speed.
  • the subarea A EFF2 defines a work range in which the maximum speed of lowering of the boom 18 is equal to 75% of the maximum speed.
  • the maximum speed of lowering of the boom 18 is, respectively, 50%, 25% and 10% with respect to the maximum speed.
  • the work area A EFF2 has a maximum speed of lowering of the boom of 50% with respect to the maximum speed that it has in the area A EFF1 .
  • the work sub-areas A EFF3 and A EFF4 have, respectively, maximum speeds of lowering of the boom of 25% and 10%. Outside of the work area A EFF the lowering speed of the boom is zero. If the vehicle were to be found to operate outside of the actual work area A EFF for the load conditions and for the type of equipment installed, the operator must reduce the length of the boom to return to the conditions in which a manoeuvring speed of the boom is possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Civil Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Jib Cranes (AREA)

Description

    Field of invention
  • The present invention refers to a lifting vehicle, comprising:
    • a self-propelled chassis,
    • a telescopic boom articulated to the self-propelled chassis and fitted with a connection for the mounting of equipment, and
    • at least one cylinder for lifting/lowering disposed between the telescopic boom and the chassis.
    Description of the prior art
  • Lifting vehicles of this type can be equipped with different types of equipment, such as forks, shovels, aerial platforms, etc. During operation, the load applied on the equipment located at the end of the telescopic boom may vary within very wide ranges.
  • One of the fundamental safety elements of a lifting vehicle is its stability to longitudinal overturning.
  • Usually the vehicle is equipped with a load diagram that indicates the maximum load that can be applied at the end of the lifting boom depending on the position of the equipment.
  • EP-A-1312579 discloses a lifting vehicle according to the preamble of claim 1, wherein an electronic control system generates an electronic load diagram and displays on the electronic load diagram a cursor located at the working position of the boom. However, compliance with the load diagram is left to the operator.
  • Usually, vehicles with a telescopic lifting boom are equipped with a safety anti-overturning system which blocks or reduces the speed of movement of the lifting boom when the rear axle load falls below a predetermined reference threshold. In fact, the reduction of the load on the rear axle below a critical threshold indicates that the vehicle is close to a condition of overturning. An example of an anti-overturning system of this type is disclosed in EP-A-1897847 .
  • One problem of the known solutions is that the anti-overturning safety system of the known type is not a sufficient safety guarantee in dynamic conditions. The anti-overturning system of vehicles of known type is essentially designed for safety against longitudinal overturning under static conditions. If the anti-overturning safety system blocks the boom during the lowering of the boom at high speed, the inertial force may cause overturning of the vehicle.
  • The situation is made even more complex by the fact that the risk conditions vary considerably depending on the type of equipment that the vehicle uses.
    • Object and summary of the invention
  • The present invention aims to provide a lifting vehicle with increased safety against longitudinal overturning under dynamic conditions.
  • According to the present invention, this object is achieved by a vehicle having the characteristics forming the subject of the claims.
  • The claims form an integral part of the teaching administered in relation to the invention.
    • Brief description of the drawings
  • The present invention will now be described in detail with reference to the accompanying drawings, provided purely by way of a non-limiting example, wherein:
    • Figure 1 is a perspective view of a lifting vehicle with telescopic boom,
    • Figure 2 is a simplified diagram of the control circuit of the vehicle boom of Figure 1, and
    • Figures 3 and 4 show two load diagrams of the lifting vehicle with different loads and indicating ranges with different maximum speeds of lowering the telescopic boom.
    Detailed description of the embodiments of the invention
  • With reference to Figure 1, numeral 10 designates a lifting vehicle comprising a self-propelled chassis 12 having a front axle 14 and a rear axle 16. The vehicle 10 comprises a telescopic boom 18 articulated in the rear section of the chassis 12 about a transverse axis 20. The telescopic boom 18 is equipped at one end with an attachment 22 for the connection of different types of equipment.
  • The vehicle 10 comprises at least one cylinder for lifting/lowering 24 with ends articulated to the chassis 12 and the boom 18 about respective axes 26, 28. The boom 18 is also equipped with a cylinder (not shown) which controls the telescopic extension and retraction movements of the boom.
  • With reference to Figure 2, the vehicle 10 has a hydraulic control circuit 30 which includes a main pump 32 driven by the thermal engine 34 of the vehicle. The hydraulic circuit 30 comprises a hydraulic distributor 36 that receives fluid under pressure from the pump 32 and controls the hydraulic cylinder 24 by means of a hydraulic supply line 38. The distributor 38 is connected to a reservoir 40 via a discharge line 42.
  • The hydraulic control circuit 30 comprises a block valve 44 controlled electrically, disposed on the supply line 38. When the block valve 44 is activated it blocks the movements of the boom 18 that worsen the risk of overturning (lowering and extension).
  • The hydraulic control circuit 30 further includes a relief valve 46 controlled electrically. The relief valve 46 is adapted to limit the maximum speed of lowering of the boom 18. The lowering speed of the boom 18 is controlled by the operator through the distributor 36. The relief valve 46 limits the maximum flow rate of fluid on the command line 38 and consequently limits the maximum speed of lowering of the boom 18 as a function of the electric control signal which it receives.
  • Again with reference to Figure 2, the vehicle 10 includes a control system 48 which controls, among other things, the block valve 44 and the relief valve 46. The control system 48 comprises an electronic control unit 50 programmed to control the relief valve 46 in function of the position of the boom 18, of the load applied to it and the type of equipment applied to it.
  • The control system 48 includes a load sensor 52 which provides an indication of the intensity of the applied load to the boom 18. The load sensor 52 can be for example a load cell applied to the cylinder for lifting/lowering 24. The control system 48 comprises sensors 54, 56 which detect, respectively, the angle α of inclination of the boom 18 and the length L of extension of the telescopic portion of the boom 18 (boom extension). The control system 48 also comprises a recognition unit 58 adapted to recognize the type of equipment 60 applied to the boom 18. The recognition unit 58 can for example be based on RFID technology.
  • The control system 48 further comprises one or more sensors 62 for detecting the load on the rear axle 16 of the vehicle. A plurality of selectors 64, 66 can also be provided which can be manually set by the operator.
  • For example, a selector 64 may be provided, for selection of the type of equipment 60 in the case wherein the recognition unit 58 does not automatically recognize the type of equipment 60 applied to the boom 18. A selector 66 can also be provided which allows temporarily deactivating of the operation of block valve 44.
  • The electronic control unit 50 receives signals from the sensors 52, 54, 56, 62 from the recognition unit 58 and from the selectors 64, 66, plus any information from other sensors or from other selectors that may be present on the vehicle.
  • The electronic control unit 50 is programmed to control the relief valve 46 so as to limit the maximum speed of lowering of the boom 18 according to the type of equipment 60, the load on the boom 18, the length L and angle α of the boom 18.
  • The electronic control unit 50 limits the maximum speed of lowering of the boom with respect to the absolute maximum speed, in order to ensure that the vehicle operates in stable conditions regarding the risk of longitudinal overturning even under dynamic conditions. In particular, the limitation on the maximum lowering speed of the boom 18 enables the vehicle to be kept under safe conditions during the lowering manoeuver of the boom 18, which is the most critical from the point of view of the risk of longitudinal overturning.
  • Figures 3 and 4 show by way of example two load diagrams of the vehicle 10 with a different load P applied to the boom 18. The load diagram of Figure 3 shows the working range of the vehicle 10 with a load P1 of 1500 Kg and the diagram of Figure 4 shows the working range of the same vehicle with a load P2 of 3400 Kg. In Figures 3 and 4 the diagrams relating to a vehicle operating with the forks 68 are shown. The load diagrams of the vehicle 10 vary depending on the type of equipment applied to the boom and as a function of the load applied to the boom.
  • In Figures 3 and 4 AMAX indicates the maximum work area of the boom 18, which represents the geometric coverage area of the boom 18. In the same diagrams AEFF indicates the actual work area with the load P1 or P2. The actual work area is reduced compared with the maximum work area with the increase of the load P. The maximum work area AMAX corresponds to the conditions in which the load P applied to the boom 18 is zero.
  • The actual work area AEFF is divided into work sub-areas with different maximum speeds, indicated with AEFF1, AEFF2, AEFF3, AEFF4 and AEFF5. The electronic control unit 50 limits the maximum speed of lowering of the boom 18 in different ways according to the different work sub-areas. In the example illustrated in Figures 3 and 4 in the work sub-area AEEF1 the maximum speed of lowering of the boom 18 is 100%, this means that in this subarea there is no limitation of the maximum speed of lowering of the boom and the lowering speed is equal to the maximum possible speed. In the graph of Figure 3, the subarea AEFF2 defines a work range in which the maximum speed of lowering of the boom 18 is equal to 75% of the maximum speed. In the sub-areas AEFF3 AEFF4 and AEFF5 the maximum speed of lowering of the boom 18 is, respectively, 50%, 25% and 10% with respect to the maximum speed.
  • In the graph of Figure 4, the work area AEFF2 has a maximum speed of lowering of the boom of 50% with respect to the maximum speed that it has in the area AEFF1. The work sub-areas AEFF3 and AEFF4 have, respectively, maximum speeds of lowering of the boom of 25% and 10%. Outside of the work area AEFF the lowering speed of the boom is zero. If the vehicle were to be found to operate outside of the actual work area AEFF for the load conditions and for the type of equipment installed, the operator must reduce the length of the boom to return to the conditions in which a manoeuvring speed of the boom is possible.
  • As already said the diagrams of Figures 3 and 4 vary depending on the load P and depending on the type of equipment installed on the vehicle. These diagrams also vary depending on the type of vehicle. The diagrams of Figures 3 and 4 have been provided purely for guidance in order to understand, on a qualitative level, the operation of the system according to the invention. The actual work areas for the type of vehicle, for the type of equipment installed and for the different loads P are determined experimentally in order to maintain the vehicle 10 under conditions of dynamic stability with regard to the risk of longitudinal overturning during the lowering manoeuver of the boom 18.
  • Of course, without prejudice to the principle of the invention, the details of construction and the embodiments may be widely varied with respect to what is described and illustrated without thereby departing from the scope of the invention as defined by the claims which follow.

Claims (3)

  1. Lifting vehicle, comprising:
    - a self-propelled chassis (12) having one front axle (14) and one rear axle (16),
    - a telescopic boom (18) articulated to the chassis (12) and provided with an attachment (22) for mounting equipment (60),
    - at least one cylinder for lifting/lowering (24) disposed between the telescopic boom (18) and the chassis (12),
    - a hydraulic control circuit (30) including a hydraulic distributor (36) connected to said cylinder for lifting/lowering (24),
    - a control system (48) associated with said hydraulic control circuit (30),
    - a load sensor (52) adapted to detect the load applied to said boom (18),
    - a length sensor (56) adapted to detect the extension length (L) of said telescopic boom (18),
    - an angle sensor (54) adapted to detect the lifting angle (α) of said telescopic boom (18),
    - means (58, 64) to provide information on the type of equipment (60) applied to said boom (18), and
    - an electronic control unit (50) that receives information provided by the load sensor (52), the length sensor (56), the angle sensor (54) and information on the type of equipment (60) applied to the boom (18),
    wherein the electronic control unit (50) is programmed to define a load diagram defining an actual work area (AEFF) of the boom (18),
    characterised in that the electronic control unit (50) is programmed to divide said load diagram into a plurality of actual work sub-areas (AEFF1, AEFF2, AEFF3, AEFF4, AEFF5) depending on the type of equipment (60), the load (P) applied to the boom (18), the length (L) and the angle (α) of the boom (18), said actual work sub-areas (AEFF1, AEFF2, AEFF3, AEFF4, AEFF5) having different maximum lowering speeds of the boom (18), the electronic control unit (50) being also programmed to act on a relief valve (46) so as to limit the maximum speed of lowering of the boom (18) depending on the actual work sub-area (AEFF1, AEFF2, AEFF3, AEFF4, AEFF5) in which the boom (18) works.
  2. Lifting vehicle according to claim 1, characterised in that it comprises a recognition unit (58) adapted to detect the type of equipment (60) applied to the boom (18).
  3. Lifting vehicle according to claim 1, characterised in that it includes a selector (64) that can be manually set to select the type of equipment (60) applied to the boom (18).
EP12166815.6A 2011-05-06 2012-05-04 Lifting vehicle Active EP2520536B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000399A ITTO20110399A1 (en) 2011-05-06 2011-05-06 LIFTING VEHICLE

Publications (2)

Publication Number Publication Date
EP2520536A1 EP2520536A1 (en) 2012-11-07
EP2520536B1 true EP2520536B1 (en) 2014-06-25

Family

ID=44554997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12166815.6A Active EP2520536B1 (en) 2011-05-06 2012-05-04 Lifting vehicle

Country Status (3)

Country Link
EP (1) EP2520536B1 (en)
ES (1) ES2494741T3 (en)
IT (1) ITTO20110399A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3736245B1 (en) * 2019-05-10 2021-12-15 Manitou Bf Control of a handling machine
US11286141B2 (en) * 2018-03-30 2022-03-29 Manitou Italia S.R.L. Articulated self-propelled work machine
DE102021121163A1 (en) 2021-08-13 2023-02-16 Danfoss Power Solutions Gmbh & Co. Ohg Improved telehandler
DE102021128580A1 (en) 2021-11-03 2023-05-04 Kramer-Werke Gmbh Construction machine or agricultural machine
EP4242160A1 (en) 2022-03-08 2023-09-13 Kramer-Werke GmbH Construction machine or agricultural machine

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3000481B1 (en) * 2013-01-03 2015-01-30 Manitou Bf METHOD FOR ADJUSTING A HANDLING MACHINE, AND CORRESPONDING HANDLING MACHINE
GB2551299A (en) 2013-07-26 2017-12-13 Jc Bamford Excavators Ltd A method of weighing a load
PL3059202T3 (en) 2015-02-18 2019-10-31 Merlo Project Srl A lifting vehicle with a transverse stability control system
FR3107521B1 (en) 2020-02-25 2022-01-21 Manitou Bf load handling machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6647718B2 (en) * 2001-10-04 2003-11-18 Husco International, Inc. Electronically controlled hydraulic system for lowering a boom in an emergency
US6779961B2 (en) * 2001-10-29 2004-08-24 Ingersoll-Rand Company Material handler with electronic load chart
GB2390595B (en) * 2002-07-12 2005-08-24 Bamford Excavators Ltd Control system for a machine
DE102006042372A1 (en) * 2006-09-08 2008-03-27 Deere & Company, Moline charger
DE102006042370A1 (en) * 2006-09-08 2008-03-27 Deere & Company, Moline charger

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11286141B2 (en) * 2018-03-30 2022-03-29 Manitou Italia S.R.L. Articulated self-propelled work machine
EP3736245B1 (en) * 2019-05-10 2021-12-15 Manitou Bf Control of a handling machine
DE102021121163A1 (en) 2021-08-13 2023-02-16 Danfoss Power Solutions Gmbh & Co. Ohg Improved telehandler
WO2023016771A1 (en) 2021-08-13 2023-02-16 Danfoss Power Solutions Gmbh & Co Ohg Improved telescopic loader
DE102021128580A1 (en) 2021-11-03 2023-05-04 Kramer-Werke Gmbh Construction machine or agricultural machine
EP4242160A1 (en) 2022-03-08 2023-09-13 Kramer-Werke GmbH Construction machine or agricultural machine
DE102022105449A1 (en) 2022-03-08 2023-09-14 Kramer-Werke Gmbh Construction machine or agricultural machine

Also Published As

Publication number Publication date
ES2494741T3 (en) 2014-09-16
EP2520536A1 (en) 2012-11-07
ITTO20110399A1 (en) 2012-11-07

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